MEG Data Analysis Report
Subject Information
| ID | Name | Age | Gender |
|---|---|---|---|
| MEG B002 | Sample 2 | 20 | Male |
MEG Information
| # Sensors | Date | Duration | # Segments |
|---|---|---|---|
| 306 | mne_anonymize | 60.939 minutes | 8 |
MEG-MRI Automated Coregistration
Fig 1-1. Initial labelling for the fiducials
Fig 1-2. Final MEG-MRI coregistration
IED Number and Timing
Fig 2-1. IED distribution in various sublobar regions over time for segment 1 of MEG recordings
Fig 2-2. IED distribution in various sublobar regions over time for segment 2 of MEG recordings
Fig 2-3. IED distribution in various sublobar regions over time for segment 3 of MEG recordings
Fig 2-4. IED distribution in various sublobar regions over time for segment 4 of MEG recordings
Fig 2-5. IED distribution in various sublobar regions over time for segment 5 of MEG recordings
Fig 2-6. IED distribution in various sublobar regions over time for segment 6 of MEG recordings
Fig 2-7. IED distribution in various sublobar regions over time for segment 7 of MEG recordings
Fig 2-8. IED distribution in various sublobar regions over time for segment 8 of MEG recordings
Table 1. Number of epochs tested positive from a particular brain region
| Brain regions | LT | RT | LP | RP | LO | RO | LF | RF |
|---|---|---|---|---|---|---|---|---|
| Number of IED events | 21 | 867 | 9 | 61 | 0 | 46 | 2 | 168 |
| Percentage | 1.79% | 73.85% | 0.77% | 5.2% | 0.0% | 3.92% | 0.17% | 14.31% |
LT = left temporal; RT = right temporal; LP = left parietal; RP = right parietal;
LO = left occipital; RO = right occipital; LF = left frontal; RF = right frontal
Source Imaging of Detected IED Events
Fig 3-1. MSI of IED events using ECD
Fig 3-2. MSI of IED events using dSPM
Sensor-level Details of Detected IED Cluster(s)
Fig 4-1. Sensor waveforms and topographical maps of cluster 1
Fig 4-2. Sensor waveforms and topographical maps of cluster 2
Preliminary Conclusions
60.939 minutes MEG recording suggests a generator at ['right temporal', 'right frontal'].
181 IED events and 2 IED cluster(s) have been found after goodness-of-fit threshold filtering and local-outlier-factor algorithm performing.
Analysis Information
Name: Batch MSI analysis.
Description: Source reconstruction for all the IED events.
Input: Raw MEG recordings & T1-weighted image.
Output: MEG-MRI coregistration results; IED detection results; MSI of all the detected IED events; Sensor-level results of IED clustering analysis.
Parameters: Band pass-filtering = 1-100 Hz; Head model = Overlapping sphere; Source space = Surface-based cortex; Source imaging algorithms = ECD and dSPM methods.